Parallax Barrier Pixel Control for Stereoscopic Crosstalk
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Solution Overview
Problem
Existing display devices with parallax barriers struggle to maintain optimal image quality for varying observer positions, leading to crosstalk due to light leakage from adjacent pixels when the observer's distance changes.
Innovation Solution
A display device with a parallax adjustment mechanism that includes transmissive and non-transmissive regions, adjustable based on external information, and a controller that dynamically changes the number of successive pixels displayed for each viewpoint, ensuring optimal image quality by adjusting the position and number of pixels in response to observer position changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the slit width of the barrier is changed based on observer distance, then the distance range for stereoscopic viewing is expanded, but the display position of viewpoint images does not change causing light to shift from pixel center to end, resulting in crosstalk
Solution Approach 1:
The patent applies dynamics by making both the barrier slits and display pixel positions changeable according to observer distance. The parallax barrier controller adjusts slit widths dynamically, while the display controller dynamically changes the number of pixels displaying images for each viewpoint, ensuring both elements adapt together to maintain proper light alignment across varying distances.
Solution Approach 2:
The patent changes physical parameters of both the barrier and display system. The barrier controller modifies the width parameter of slits, while the display controller modifies the number of active pixels parameter. These coordinated parameter changes ensure that as observer distance varies, both the light transmission paths and pixel emission patterns adjust to maintain proper correspondence, preventing crosstalk.
2Reliability
If only the barrier slit width is adjusted without changing display pixel positions, then the parallax effect is maintained, but light from adjacent pixels leaks into the observer's view when distance varies
Solution Approach 1:
The system dynamically adjusts both barrier slit configurations and display pixel assignments based on real-time observer distance detection. When the observer moves closer or farther, the parallax barrier controller and display controller work together to dynamically reconfigure the system, maintaining reliable parallax separation while preventing light leakage that would occur with static pixel positions.
Solution Approach 2:
The patent implements feedback through the observer distance detection mechanism that provides information to both the parallax barrier controller and display controller. This feedback loop enables the system to sense changes in observer position and automatically adjust both barrier slits and pixel configurations to maintain proper optical alignment and prevent crosstalk.
3Device complexity
If the number of pixels per viewpoint is fixed, then the display configuration is simple, but optimal image quality cannot be maintained across varying observer distances
Solution Approach 1:
The display controller dynamically changes the number of pixels that display images for each viewpoint based on detected observer distance. This dynamic reconfiguration allows the system to maintain optimal image quality across different viewing distances by adjusting pixel utilization, while the overall display hardware configuration remains relatively simple.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively reduces crosstalk and maintains optimal image quality by dynamically adjusting the pixel display based on observer position, enhancing the stereoscopic image viewing experience across varying distances.
Implementation Method 1
a plurality of transmissive regions for transmitting light and a plurality of non-transmissive regions for limiting transmittance of light are provided in a switchable manner
Data Source
AI summary
According to an aspect, a display device includes: a display unit that includes a plurality of pixels arranged in a matrix and that is configured to display images corresponding to a plurality of viewpoints; a parallax adjustment that is placed at a position facing the display unit, and in which a plurality of transmissive regions for transmitting light and a plurality of non-transmissive regions for limiting transmittance of light are provided in a switchable manner; a parallax controller that is configured to change positions of the transmissive regions and the non-transmissive regions, based on external information; and a display controller that is configured to change a number of successive pixels displaying an image corresponding to each of the viewpoints, based on external information.